Drag and drop the statements to the correct box: Enzymes DO: Decrease required activation energy Enzymes DON'T: Remain unchanged during the reaction Increase the reaction rate Energy Change the products made Activation energy (X-M reactants Change the reactants used Activation Energy Activation energy (Y-X) products GH Reaction path Reaction without catalyst Reaction with catalyst Name two things we learned that can denature an enzyme:

Enzymes are important biological catalysts because they: Lower the activation energy of a biochemical reaction Lower the entropy of a biochemical reaction Increase the free energy of a biochemical reaction Supply the energy to initiate a biochemical reaction

Figure #1 and #2 show the results collected from a fun enzyme activity lab that did NOT involve the liver;) Answer the questions that follow. REACTION RATE (mg/sec) -1 m O 0 1 2 3 4 5 6 Rate of Reaction Enzyme A Rate ofreaction pH Figure #1 pH and enzyme reaction rate 0 10 7 8 9 10 11 12 13 14 Enzyme B Temperature 35 40 Enzymes A and B Figure # 2 The effect of temperature (°C) on enzyme activity a. Looking at these results, could these enzymes (A and B) be found somewhere in the human body? If so, where? Explain your answer, and be sure to discuss both factors (pH and temperature) as they relate to enzyme activity/rate of reaction.

Refer to Model 10.1 and answer the question that follows What is free energy? What is its symbol?